Closure for bottles or jars.



C. HAMMER.

CLOSURE FOR BOTTLES 0R JARS.

APPLICATION FILED AUG.8. 1912.

1,160,597. Patented NOV. 16, 1915'.

" mpmmmnm Ji V i wara s \\\\\\\s UNITED STATES PATENT orrron.

CHARLES HAMMER OF BROOKLYN, NEW YORK.

cLosUBE FOR Borrms on .ians.

To all whom it may concern: t

The princlpal object of the invention is to" provide a flat metal cap .which can be screwed or locked on a bottle or jar formed with a single continuous screw thread.

W'ith the foregoing and other ob ects 1n 7 view which will appear as thedescription proceeds, the invention resides in the combination and arrangement of parts and in the details of construction hereinafter-described changes in the precise embodiment oii invention herein disclosed can be made within such separated rlbs may be employed, but

the scope of what is claimed without de-" parting from the spirit of the invention.

In the accompanying drawing .formmg part of this specification,l igure 1 is a side elevation of a jar provided with a cap or closure constructed in accordance with the present invention. Fig. 2 is a bottom plan view without the cover plate; Fig. 3 is a vertical section through the upper end of the jar shown in Fig. 1; Fig. 4 is a plan View of the upper end of the jar showing the single continuous screw thread; Fig. 5 is an enlarged vertical sectional view.

Like reference numerals indicate corresponding parts in the different figures of the drawing.

The numeral 1 indicates the upper end of the ar or bottle which preferably is formed or molded with anannular rib 2 from which extends upward the usual single continuous spiral thread 3.

Heretofore, so far as I am aware, it has been customary to employ what is known as a' screw cap for closing a bottle or jar having a single continuous spiral thread, the thread or screw of the cap being of complementary 'form to the thread of the jar or bottle. The present invention aims to dispense with the expense of rolling or forming a continuous thread in the metal cap and yet adapt the cap to be employed on a bottle having a single continuous thread. To this end, the cap 4, as shown the jar or bottle.

.shown best in Fig.1, is formed at such an Specification of Letters Patent. Patented Nov, 16, .1915, Application filed August 3,1912. Seria1NoL714,144. v

in: Fig. 5, is formed with a depending annular flange 5, and the flange 5 is'pressed or punched inwardly attwo opposite points,

,as indicated at 6-6'to provide short ribs which are intended to engage the thread of Each ofthe ribs 6, as

incline that it will parallelthe pitch of the thread of the jar or bottle.

I n forming the ribs or projections 6 -6 it is necessary to dispose them in different horizontal planes, that is to say, the different ribs are placed at different distances between the upper and lower portions of the flange 5. The reasonfor this arrangement of the ribs'is that the portions of the screw thread to be engaged by one rib are i located-in a different horizontal planefrom the portions of the thread to be engaged'by and claimed, it being understoodft ll .f-t Poslte I- g While. the caP31115115 been descri ed as having two ribs, it'will be understoodjthat. any other desired number of in all cases it is necessary, where the ribs are disposed indifferent horizontal planes.

As will appear from the Figs. 1 and 2, the

projections 6 are preferably somewhat elongated and provided with abrupt ends. This construction makes the projections sufiiciently long to provide a good engagement between the projections and the threaded mouth of the bottle or other storage vessel to which the cap or closure is applied.

I have found that two ribs or projections 6 gives the best results because this number enables me to locate one rib near the usual roughened portion provided at the top of the flange to give a good grip to the hand of the user; and the other near the edge of the flange; which is strengthened, as by turning or curling over this edge. The roughened portion is preferably made by corrugating the flange near the top; and these corrugations not only roughen the flange, but of course strengthen it as well. The slopeof the ribs or projections is made to correspond respectively over substantially their whole lengths. By thus locating each rib closely degree of inclination as stated, and thus adjacent to a portion of the flange which is strengthened, the cap can be screwed on the vessel very tightly without any risk of deformation. pressure on the upper rib will be taken care of by the corrugations, and similar pressure on the lower will be counteracted by the curled edge. Moreover, by restricting the keeping the ribs near to the corrugations and the curled edge over their whole lengths, the stresses due to the pressure of the thread 3 on the ribs are prevented from concentrating, but are distributed uniformly over a; material extent of the corrugated portion and the curled edge; and the reinforcing effect of these parts of the flange is thereby.

which is dished or bulged downwardly at its center, as indicated at 1Q and is. provided with an outward extending flange 11 which rests upon the upper edge of the bottle neck 1, and is held securely thereon by thecap 4.

The flange of the cap may bestifi'ened by strengthening the lower edge of the same, for example by providing a bead shown clearly inthe. drawings and extending entirely around the lower edge of the flange.

In usingthe closure of the present invention, the plate 9 is first placed upon the bottle neck. and the cap 4 is then screwed into closedposition, in the same manner in which a screw cap is closed.

WVhat. is claimed is:

1. A closure for a storage vessel comprising a top and a flange, the flange being provided with .a plurality of projections on its;

inner surface, each of said projections being inclined with respect to the top and elongated a material distance circumferentially of the flange, and being united to the flange at all points, said projections further being located in close proximity to a strengthened For example, any downward and having a pair of projections on its inner surface between said. strengthened portions and located at different distances from'the top, one of said projections being arranged in close proximity over substantially its whole length to the strengthened portion of the flange near the top, and the other in close proximity over' substantially its entire length to the other strengthened portion.

3. A closure for a storage vessel comprising a top and a flange, the flange having a strengthened portionnear the top and another strengthened portion adjacent its edge, and having a pair of projections onits inner surface, each of which is elongated circumferentially of the flange and united thereto at all points, one of said projections being located in close proximity to the strengthened portion near the top, over substantially its entire length, and the other projection'being arranged in close proximity over substantially its entire length to the other strengthened portion.

4. A closure for a storage vessel having a single continuous thread adjacent the mouth of the same, said closure comprising a flange having a number of projections on its inner surface, said projections being elongated and having abrupt ends and being located at different distances from the edge of the flange, said top having an opening and being provided with a rib surrounding said opening, and a dished plate adapted to fit over the mouth of the vessel andhaving an outward extending rim to contact with the mouth of the vessel and to be engaged by the rib portion of the top of the closure.

' In testimony that I claim the foregoing as my own, I have hereto afiixed my signature in the presence of two witnesses.

CHARLES HAMMER.

Witnesses OLIVER E. DAVIS, OTTILIE M. HODWEITER. 

